--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/common/arm/cdes16.cia Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,1115 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// e32\common\arm\cdes16.cia
+//
+//
+
+#include <e32cia.h>
+#include "../common.h"
+
+#if defined(__DES16_MACHINE_CODED__) || defined(__EABI__)
+
+GLREF_C void Des16PanicBadDesType();
+GLREF_C void Des16PanicPosOutOfRange();
+
+#endif
+
+#ifdef __DES16_MACHINE_CODED__
+
+GLREF_C void Des16PanicLengthNegative();
+GLREF_C void Des16PanicMaxLengthNegative();
+GLREF_C void Des16PanicLengthOutOfRange();
+GLREF_C void Des16PanicDesOverflow();
+GLREF_C void Des16PanicDesIndexOutOfRange();
+
+__NAKED__ EXPORT_C const TUint16 *TDesC16::Ptr() const
+//
+// Return a pointer to the buffer.
+//
+ {
+ asm("ldr r1, [r0], #4 ");
+ asm("cmp r1, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r1, r1, r1, lsr #1 ");
+ asm("msr cpsr_flg, r1 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 ");
+ __JUMP(,lr);
+ }
+
+#ifndef __EABI_CTORS__
+__NAKED__ EXPORT_C TPtrC16::TPtrC16()
+//
+// Default constructor
+//
+ {
+ asm("mov r1, #0x10000000 "); // type=EPtrC, length=0
+ asm("mov r2, #0 "); // ptr=NULL
+ asm("stmia r0, {r1,r2} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16::TPtrC16(const TDesC16& /*aDes*/)
+//
+// Constructor
+//
+ {
+ asm("ldr r2, [r1], #4 "); // r2 = type/length
+ asm("bic r3, r2, #0xF0000000"); // r3 = length
+ asm("orr r3, r3, #0x10000000"); // r3 = EPtrC + length
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
+ asm("str r3, [r0] ");
+ asm("str r1, [r0, #4] ");
+ __JUMP(,lr);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C TPtrC16::TPtrC16(const TUint16* /*aString*/)
+//
+// Constructor
+//
+ {
+ asm("mov r2, r1 "); // save aString address
+ asm("1: ");
+ asm("ldrh r3, [r1], #2 ");
+ asm("cmp r3, #0 ");
+ asm("bne 1b "); // loop until we reach zero terminator
+ asm("rsb r1, r2, r1 "); // r1 = 2*length + 2
+ asm("sub r1, r1, #2 "); // r1 = 2*length
+ asm("mov r1, r1, lsr #1 "); // r1 = length
+ asm("orr r1, r1, #0x10000000 "); // r1=EPtrC + length
+ asm("stmia r0, {r1, r2} "); // store type/length and ptr fields
+ __JUMP(,lr);
+ }
+#endif
+
+__NAKED__ EXPORT_C TPtrC16::TPtrC16(const TUint16* /*aBuf*/,TInt /*aLength*/)
+//
+// Constructor
+//
+ {
+ asm("orrs r2, r2, #0x10000000 ");
+ asm("strpl r2, [r0] ");
+ asm("strpl r1, [r0, #4] ");
+ __JUMP(pl,lr);
+ asm("b " CSM_Z24Des16PanicLengthNegativev);
+ }
+
+__NAKED__ EXPORT_C TPtr16::TPtr16(TUint16* /*aBuf*/,TInt /*aMaxLength*/)
+//
+// Constructor
+//
+ {
+ asm("cmp r2, #0 ");
+ asm("movpl r3, r1 ");
+ asm("movpl r1, #0x20000000 "); // length=0, EPtr
+ asm("stmplia r0, {r1,r2,r3} ");
+ __JUMP(pl,lr);
+ asm("b " CSM_Z27Des16PanicMaxLengthNegativev);
+ }
+
+__NAKED__ EXPORT_C TPtr16::TPtr16(TUint16* /*aBuf*/,TInt /*aLength*/,TInt /*aMaxLength*/)
+//
+// Constructor
+//
+ {
+ asm("cmp r2, #0 "); // check length>=0
+ asm("cmpge r3, r2 "); // if so, check maxlength>=length
+ asm("movge r12, r1 ");
+ asm("orrge r2, r2, #0x20000000 "); // r2 = length + EPtr
+ asm("stmgeia r0, {r2,r3,r12} ");
+ __JUMP(ge,lr);
+ asm("cmp r2, #0 ");
+ asm("bmi " CSM_Z24Des16PanicLengthNegativev);
+ asm("cmp r3, #0 ");
+ asm("bmi " CSM_Z27Des16PanicMaxLengthNegativev);
+ asm("b " CSM_Z26Des16PanicLengthOutOfRangev);
+ }
+
+__NAKED__ EXPORT_C TPtr16::TPtr16(TBufCBase16& /*aLcb*/,TInt /*aMaxLength*/)
+//
+// Constructor
+//
+ {
+ asm("mov r3, r1 ");
+ asm("ldr r1, [r3] ");
+ asm("bic r1, r1, #0xF0000000 "); // r1=aLcb.Length()
+ asm("cmp r1, r2 "); // check against maxlength
+ asm("orrle r1, r1, #0x40000000 "); // r1=aLcb.Length() + EBufCPtr
+ asm("stmleia r0, {r1,r2,r3} ");
+ __JUMP(le,lr);
+ asm("b " CSM_Z26Des16PanicLengthOutOfRangev);
+ }
+
+__NAKED__ EXPORT_C TBufCBase16::TBufCBase16()
+//
+// Constructor
+//
+ {
+ asm("mov r1, #0 ");
+ asm("str r1, [r0] ");
+ __JUMP(,lr);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C TBufCBase16::TBufCBase16(const TUint16* /*aString*/,TInt /*aMaxLength*/)
+//
+// Constructor
+//
+ {
+ asm("sub r3, r1, #2 "); // r3=aString address-2
+ asm("1: ");
+ asm("ldrh r12, [r3, #2]! ");
+ asm("cmp r12, #0 ");
+ asm("bne 1b "); // loop until we reach zero terminator
+ asm("sub r3, r3, r1 "); // r3 = 2*length
+ asm("mov r3, r3, lsr #1 "); // r3 = length (+EBufC)
+ asm("cmp r3, r2 "); // check against max length
+ asm("bgt Des16PanicLengthOutOfRange__Fv ");
+ asm("stmfd sp!, {r0,lr} "); // save registers for function call
+ asm("str r3, [r0], #4 "); // save length/type field, r0->buffer
+ asm("add r2, r3, r3 "); // size=2*length into r2 for function call
+ asm("bl memmove "); // call memmove
+ __POPRET("r0,");
+ }
+#endif
+
+__NAKED__ EXPORT_C TBufCBase16::TBufCBase16(const TDesC16& /*aDes*/,TInt /*aMaxLength*/)
+//
+// Constructor
+//
+ {
+ asm("ldr r3, [r1], #4 "); // r3 = type/length
+ asm("bic r12, r3, #0xF0000000"); // r12 = length
+ asm("cmp r12, r2 "); // compare with maxlength
+ asm("bgt " CSM_Z26Des16PanicLengthOutOfRangev);
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
+ asm("stmfd sp!, {r0,lr} "); // save registers for function call
+ asm("str r12, [r0], #4 "); // store length/type, r0->buffer
+ asm("add r2, r12, r12 "); // size=2*length into r2 for function call
+ asm("bl memmove "); // call memmove
+ __POPRET("r0,");
+ }
+#endif
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C void TBufCBase16::Copy(const TUint16* /*aString*/,TInt /*aMaxLength*/)
+//
+// Copy from a string.
+//
+ {
+ asm("sub r3, r1, #2 "); // r3=aString address-2
+ asm("1: ");
+ asm("ldrh r12, [r3, #2]! ");
+ asm("cmp r12, #0 ");
+ asm("bne 1b "); // loop until we reach zero terminator
+ asm("sub r3, r3, r1 "); // r3 = 2*length
+ asm("mov r3, r3, lsr #1 "); // r3 = length (+EBufC)
+ asm("cmp r3, r2 "); // check against max length
+ asm("bgt Des16PanicLengthOutOfRange__Fv ");
+ asm("str r3, [r0], #4 "); // save length/type field, r0->buffer
+ asm("add r2, r3, r3 "); // size=2*length into r2 for function call
+ asm("b memmove "); // call memmove
+ }
+#endif
+
+__NAKED__ EXPORT_C void TBufCBase16::Copy(const TDesC16& /*aDes*/,TInt /*aMaxLength*/)
+//
+// Copy from a descriptor.
+//
+ {
+ asm("ldr r3, [r1], #4 "); // r3 = type/length
+ asm("bic r12, r3, #0xF0000000"); // r12 = length
+ asm("cmp r12, r2 "); // compare with maxlength
+ asm("bgt " CSM_Z21Des16PanicDesOverflowv);
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
+ asm("str r12, [r0], #4 "); // store length/type, r0->buffer
+ asm("add r2, r12, r12 "); // size=2*length into r2 for function call
+ asm("b memmove "); // call memmove
+ }
+
+#ifndef __EABI_CTORS__
+__NAKED__ EXPORT_C TBufBase16::TBufBase16(TInt /*aMaxLength*/)
+ {
+ asm("mov r2, #0x30000000 "); // EBuf + zero length
+ asm("str r2, [r0] ");
+ asm("str r1, [r0, #4] ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TBufBase16::TBufBase16(TInt /*aLength*/, TInt /*aMaxLength*/)
+ {
+ asm("cmp r1, #0 "); // check length>=0
+ asm("cmpge r2, r1 "); // if so, check maxlength>=length
+ asm("orrge r1, r1, #0x30000000 "); // r1=length + EBuf
+ asm("stmgeia r0, {r1,r2} "); // store length/type and maxlength fields
+ __JUMP(ge,lr);
+ asm("cmp r2, #0 ");
+ asm("bmi " CSM_Z27Des16PanicMaxLengthNegativev);
+ asm("b " CSM_Z26Des16PanicLengthOutOfRangev);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C TBufBase16::TBufBase16(const TUint16* /*aString*/, TInt /*aMaxLength*/)
+ {
+ asm("mov r12, r1, lsr #1 "); // save aString pointer (lose bottom bit which should be 0)
+ asm("1: ");
+ asm("ldrh r3, [r1], #2 ");
+ asm("cmp r3, #0 ");
+ asm("bne 1b "); // loop until we reach zero terminator
+ asm("rsb r3, r12, r1, lsr #1 "); // r3 = length + 1
+ asm("sub r3, r3, #1 "); // r3 = length
+ asm("cmp r3, r2 "); // compare to max length
+ asm("bgt Des16PanicLengthOutOfRange__Fv "); // length too big, so panic
+ asm("orr r1, r3, #0x30000000 "); // if length<=max, r1=EBuf + length
+ asm("stmfd sp!, {r0, lr} "); // save registers for function call
+ asm("stmia r0!, {r1, r2} "); // store type/length and max length fields, r0->buffer
+ asm("mov r2, r3, lsl #1 "); // r2=Size()
+ asm("mov r1, r12, lsl #1 "); // r1=aString
+ asm("bl memmove "); // call memmove
+ __POPRET("r0,");
+ }
+#endif
+
+__NAKED__ EXPORT_C TBufBase16::TBufBase16(const TDesC16& /*aDes*/, TInt /*aMaxLength*/)
+ {
+ asm("ldr r3, [r1], #4 "); // r3 = type/length
+ asm("bic r12, r3, #0xF0000000"); // r12 = length
+ asm("cmp r12, r2 "); // compare with maxlength
+ asm("bgt " CSM_Z26Des16PanicLengthOutOfRangev);
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
+ asm("stmfd sp!, {r0,lr} "); // save registers for function call
+ asm("orr r3, r12, #0x30000000 "); // add EBuf type field
+ asm("str r3, [r0], #4 "); // store length/type, r0->max length
+ asm("str r2, [r0], #4 "); // store max length, r0->buffer
+ asm("mov r2, r12, lsl #1 "); // Size() into r2 for function call
+ asm("bl memmove "); // call memmove
+ __POPRET("r0,");
+ }
+#endif
+
+__NAKED__ EXPORT_C void TDes16::SetLength(TInt /*aLength*/)
+//
+// Set the length of the descriptor, checking the length is O.K.
+//
+ {
+ asm("ldmia r0, {r2,r3} "); // r2=length/type, r3=maxlength
+ asm("cmp r1, r3 "); // check aLength against maxlength and for -ve values
+ asm("bhi " CSM_Z21Des16PanicDesOverflowv);
+ asm("and r2, r2, #0xF0000000 "); // r2=type field
+ asm("cmp r2, #0x40000000 "); // check for EBufCPtr
+ asm("orr r2, r2, r1 "); // r2=type + new length
+ asm("str r2, [r0] "); // store new length
+ __JUMP(ne,lr);
+ asm("ldr r2, [r0, #8] "); // r2=pointer to TBufCBase
+ asm("str r1, [r2] "); // update length of TBufCBase
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C void TDes16::SetMax()
+//
+// Set the length to MaxLength().
+//
+ {
+ asm("ldmia r0, {r1,r2} "); // r1=length/type, r2=maxlength
+ asm("and r1, r1, #0xF0000000 "); // r1=type field
+ asm("cmp r1, #0x40000000 "); // check for EBufCPtr
+ asm("orr r1, r1, r2 "); // r1=type field + maxlength
+ asm("str r1, [r0] "); // store new length
+ __JUMP(ne,lr);
+ asm("ldr r1, [r0, #8] "); // r1 = pointer to TBufCBase
+ asm("str r2, [r1] "); // update length of TBufCBase
+ __JUMP(,lr);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C void TDes16::Copy(const TUint16* /*aString*/)
+//
+// Copy a string to this descriptor.
+//
+ {
+ asm("sub r2, r1, #2 "); // r2=aString-2
+ asm("1: ");
+ asm("ldrh r3, [r2, #2]! ");
+ asm("cmp r3, #0 ");
+ asm("bne 1b "); // loop until zero terminator reached
+ asm("sub r2, r2, r1 "); // r2=2*length of string
+ asm("mov r2, r2, lsr #1 "); // r2=length of string
+ asm("ldmia r0, {r3,r12} "); // r3=type/length of this, r12=maxlength
+ asm("cmp r2, r12 "); // compare new length against maxlength
+ asm("bgt Des16PanicDesOverflow__Fv ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("and r3, r3, #0xF0000000 "); // r3=type of this
+ asm("orr r3, r3, r2 "); // r3=new type/length
+ asm("str r3, [r0], #4 "); // store it
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("streq r2, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
+ asm("add r2, r2, r2 "); // r2=size=2*length
+ asm("b memmove "); // call memmove
+ }
+#endif
+
+__NAKED__ EXPORT_C void TDes16::Copy(const TUint16* /*aBuf*/,TInt /*aLength*/)
+//
+// Copy the aLength characters to the descriptor.
+//
+ {
+ asm("ldmia r0, {r3,r12} "); // r3=type/length of this, r12=maxlength
+ asm("cmp r2, r12 "); // compare new length against maxlength
+ asm("bhi " CSM_Z21Des16PanicDesOverflowv); // Des16Panic if >MaxLength or -ve
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("and r3, r3, #0xF0000000 "); // r3=type of this
+ asm("orr r3, r3, r2 "); // r3=new type/length
+ asm("str r3, [r0], #4 "); // store it
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("streq r2, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
+ asm("add r2, r2, r2 "); // r2=size=2*length
+ asm("b memmove "); // call memmove
+ }
+
+__NAKED__ EXPORT_C void TDes16::Copy(const TDesC16& /*aDes*/)
+//
+// Copy a descriptor to this descriptor.
+//
+ {
+ asm("ldr r3, [r1], #4 "); // r3 = type/length of aDes
+ asm("bic r12, r3, #0xF0000000"); // r12 = aDes.length
+ asm("ldr r2, [r0, #4] "); // r2=this.maxlength
+ asm("cmp r12, r2 "); // compare with maxlength
+ asm("bgt " CSM_Z21Des16PanicDesOverflowv);
+ asm("ldr r2, [r0] "); // get type of this
+ asm("cmp r2, #0x50000000 "); // check both descriptor types
+ asm("cmpcc r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("and r2, r2, #0xF0000000 ");
+ asm("orr r2, r12, r2 "); // r2=new type/length of this
+ asm("str r2, [r0], #4 "); // store it
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("streq r12, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
+ asm("add r2, r12, r12 "); // size=2*length into r2 for function call
+ asm("b memmove "); // call memmove
+ }
+
+__NAKED__ EXPORT_C TPtr16 TDes16::LeftTPtr(TInt /*aLength*/) const
+//
+// Extract the left portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aLength
+ // Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("cmp r2, #0 "); // check aLength>=0
+ asm("blt Des16PanicPosOutOfRange__Fv "); // if not, panic
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, r12 "); // else limit aLength to Length()
+ asm("movgt r2, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1=this.Ptr()
+ asm("mov r3, r1 "); // r3=this.Ptr()
+ asm("orr r1, r2, #0x20000000 "); // r1=aLength + EPtr
+ asm("stmia r0, {r1-r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtr16 TDes16::RightTPtr(TInt /*aLength*/) const
+//
+// Extract the right portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aLength
+ // Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("cmp r2, #0 "); // check aLength>=0
+ asm("blt Des16PanicPosOutOfRange__Fv "); // if not, panic
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, r12 "); // else limit aLength to Length()
+ asm("movgt r2, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r0=this.Ptr()
+ asm("add r3, r1, r12, lsl #1 "); // r3=this.Ptr()+len*2
+ asm("orr r1, r2, #0x20000000 "); // r1=aLength + EPtr
+ asm("sub r3, r3, r2, lsl #1 "); // r2=Ptr()+len*2-aLength*2
+ asm("stmia r0, {r1-r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtr16 TDes16::MidTPtr(TInt /*aPos*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aPos
+ // Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, #0 "); // check aPos>=0
+ asm("cmpge r12, r2 "); // if so check Length()>=aPos
+ asm("blt Des16PanicPosOutOfRange__Fv ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r0=this.Ptr()
+ asm("add r3, r1, r2, lsl #1 "); // r3=this.Ptr()+aPos*2
+ asm("sub r2, r12, r2 "); // r2=len-aPos (=newMaxLen)
+ asm("orr r1, r2, #0x20000000 "); // r1=len-aPos + EPtr (=newLen/Type)
+ asm("stmia r0, {r1-r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtr16 TDes16::MidTPtr(TInt /*aPos*/,TInt /*aLength*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aPos, r3=aLength
+ // Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
+ asm("str r4, [sp, #-4]! "); // save r4
+ asm("ldr r12, [r1], #4 "); // r12=this.length/type
+ asm("mov r4, r1 ");
+ asm("cmp r12, #0x50000000 "); // check valid descriptor type
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r12, r12, r12, lsr #1 ");
+ asm("msr cpsr_flg, r12 ");
+ asm("ldr r12, [r1, #-4] ");
+ asm("addcs r4, r4, #4 ");
+ asm("ldrle r4, [r4] ");
+ asm("bic r12, r12, #0xF0000000 "); // r12=Length()
+ asm("addeq r4, r4, #4 "); // r4=this.Ptr()
+ asm("cmp r2, #0 "); // check aPos>=0
+ asm("subge r12, r12, r2 "); // if so, r12=Length()-aPos
+ asm("cmpge r12, r3 "); // and check Length()-aPos>=aLength
+ asm("orrge r1, r3, #0x20000000 "); // if so, r0 = aLength + EPtr
+ asm("addge r3, r4, r2, lsl #1 "); // and r2=this.Ptr()+aPos*2
+ asm("bicge r2, r1, #0xF0000000 "); // and r1=aLength
+ asm("stmgeia r0, {r1-r3} ");
+ asm("ldrge r4, [sp], #4 ");
+ __JUMP(ge,lr);
+ asm("b Des16PanicPosOutOfRange__Fv ");
+ }
+
+__NAKED__ EXPORT_C const TUint16& TDesC16::AtC(TInt /*anIndex*/) const
+//
+// Return a reference to the character in the buffer.
+//
+ {
+ asm("ldr r2, [r0], #4 "); // r2=length/type
+ asm("bic r3, r2, #0xF0000000 "); // r3=length
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("cmp r1, #0 "); // check index>=0
+ asm("cmpge r3, r1 "); // if so, check Length()>index
+ asm("addgt r0, r0, r1, lsl #1 "); // return value = this.Ptr()+index*2
+ __JUMP(gt,lr);
+ asm("b " CSM_Z28Des16PanicDesIndexOutOfRangev);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C TInt TDesC16::Locate(TChar /*aChar*/) const
+//
+// Locate character aChar in the descriptor.
+//
+ {
+ asm("ldr r2, [r0], #4 "); // r2=length/type
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("bics r3, r2, #0xF0000000 "); // r3=length
+ asm("mvneq r0, #0 "); // if length=0, not found
+ __JUMP(eq,lr);
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("add r3, r0, r3, lsl #1 "); // r3=ptr+length*2 (end of string pointer)
+ asm("add r12, r0, #2 "); // r12=ptr+2
+ asm("1: ");
+ asm("ldrh r2, [r0], #2 "); // r2=*r0++
+ asm("cmp r1, r2 "); // is r1=match char?
+ asm("cmpne r0, r3 "); // if not, is r0=r3 (end pointer)
+ asm("bne 1b ");
+ asm("cmp r1, r2 "); // did we find char?
+ asm("subeq r0, r0, r12 "); // if we did, return value = r0-ptr-2
+ asm("moveq r0, r0, lsr #1 "); // divide by 2 to get index
+ asm("mvnne r0, #0 "); // else return value =-1
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TInt TDesC16::LocateReverse(TChar /*aChar*/) const
+//
+// Locate character aChar in the descriptor in reverse.
+//
+ {
+ asm("ldr r2, [r0], #4 "); // r2=length/type
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("bics r3, r2, #0xF0000000 "); // r3=length
+ asm("mvneq r0, #0 "); // if length=0, not found
+ __JUMP(eq,lr);
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("add r3, r0, r3, lsl #1 "); // r3=Ptr()+Length()
+ asm("1: ");
+ asm("ldrh r2, [r3, #-2]! "); // r2=*--r3
+ asm("cmp r1, r2 "); // is r1=match char?
+ asm("cmpne r3, r0 "); // if not, have we reached beginning of string?
+ asm("bne 1b "); // loop if neither
+ asm("cmp r1, r2 "); // did we find match char?
+ asm("subeq r0, r3, r0 "); // if we did, return value = (r3-r0)/2
+ asm("moveq r0, r0, lsr #1 ");
+ asm("mvnne r0, #0 "); // else return value =-1
+ __JUMP(,lr);
+ }
+#endif
+
+#ifndef __KERNEL_MODE__
+__NAKED__ EXPORT_C TInt TDesC16::CompareF(const TDesC16& /*aDes*/) const
+//
+// Compare a descriptor to this descriptor folded.
+//
+ {
+ asm("ldr r12, 1f ");
+ asm("b comparebody ");
+ asm("1: ");
+ asm(".word " CSM_ZN3Mem8CompareFEPKtiS0_i);
+ }
+
+__NAKED__ EXPORT_C TInt TDesC16::CompareC(const TDesC16& /*aDes*/) const
+//
+// Compare a descriptor to this descriptor collated.
+//
+ {
+ asm("ldr r12, 1f ");
+ asm("b comparebody ");
+ asm("1: ");
+ asm(".word " CSM_ZN3Mem8CompareCEPKtiS0_i);
+ }
+#endif
+
+__NAKED__ EXPORT_C TInt TDesC16::Compare(const TDesC16& /*aDes*/) const
+//
+// Compare a descriptor to this descriptor.
+//
+ {
+ asm("ldr r12, 1f ");
+ asm("comparebody: ");
+ asm("mov r2, r1 "); // r2=&aDes
+ asm("ldr r3, [r0], #4 "); // r3=this.length/type
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("bic r1, r3, #0xF0000000 "); // r1=this.Length()
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("ldr r3, [r2], #4 "); // r3=aDes.length/type
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("ldr r3, [r2, #-4] ");
+ asm("bic r3, r3, #0xF0000000 "); // r3=aDes.Length()
+ asm("addcs r2, r2, #4 ");
+ asm("ldrle r2, [r2] ");
+ asm("addeq r2, r2, #4 "); // r2=aDes.Ptr()
+#ifdef __KERNEL_MODE__
+ asm("add r1, r1, r1 ");
+ asm("add r3, r3, r3 ");
+#endif
+ __JUMP(,r12);
+
+ asm("1: ");
+#ifdef __KERNEL_MODE__
+ asm(".word memcompare ");
+#else
+ asm(".word " CSM_ZN3Mem7CompareEPKtiS0_i);
+#endif
+ }
+#endif // __DES16_MACHINE_CODED__
+
+
+#if defined(__DES16_MACHINE_CODED__) && !defined(__EABI__)
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Left(TInt /*aLength*/) const
+//
+// Extract the left portion of the descriptor.
+//
+ {
+ // On entry r0=this, r1=aLength
+ // Return TPtrC16 in r0,r1
+ asm("ldr r3, [r0], #4 "); // r3=this.length/type
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r1, #0 "); // check aLength>=0
+ asm("blt " CSM_Z23Des16PanicPosOutOfRangev); // if not, panic
+ asm("cmp r1, r12 "); // else limit aLength to Length()
+ asm("movgt r1, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("orr r2, r1, #0x10000000 "); // r2=aLength + EPtrC
+ asm("mov r1, r0 "); // r1=result ptr
+ asm("mov r0, r2 "); // r0=result type/length
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Right(TInt /*aLength*/) const
+//
+// Extract the right portion of the descriptor.
+//
+ {
+ // On entry r0=this, r1=aLength
+ // Return TPtrC16 in r0,r1
+ asm("ldr r3, [r0], #4 "); // r3=this.length/type
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r1, #0 "); // check aLength>=0
+ asm("blt " CSM_Z23Des16PanicPosOutOfRangev); // if not, panic
+ asm("cmp r1, r12 "); // else limit aLength to Length()
+ asm("movgt r1, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("add r3, r0, r12, lsl #1 "); // r3=this.Ptr()+len*2
+ asm("orr r0, r1, #0x10000000 "); // r0=aLength + EPtrC
+ asm("sub r1, r3, r1, lsl #1 "); // r1=Ptr()+len*2-aLength*2
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Mid(TInt /*aPos*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=this, r1=aPos
+ // Return TPtrC16 in r0,r1
+ asm("ldr r3, [r0], #4 "); // r3=this.length/type
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r1, #0 "); // check aPos>=0
+ asm("cmpge r12, r1 "); // if so check Length()>=aPos
+ asm("blt " CSM_Z23Des16PanicPosOutOfRangev);
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("sub r2, r12, r1 "); // r2=len-aPos
+ asm("add r1, r0, r1, lsl #1 "); // r1=this.Ptr()+aPos*2
+ asm("orr r0, r2, #0x10000000 "); // r0=result length + EPtrC
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Mid(TInt /*aPos*/,TInt /*aLength*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=this, r1=aPos, r2=aLength
+ // Return TPtrC16 in r0,r1
+ asm("ldr r12, [r0], #4 "); // r12=this.length/type
+ asm("cmp r12, #0x50000000 "); // check valid descriptor type
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("eor r12, r12, r12, lsr #1 ");
+ asm("msr cpsr_flg, r12 ");
+ asm("ldr r12, [r0, #-4] ");
+ asm("bic r12, r12, #0xF0000000 "); // r12=Length()
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=this.Ptr()
+ asm("cmp r1, #0 "); // check aPos>=0
+ asm("subge r12, r12, r1 "); // if so, r12=Length()-aPos
+ asm("cmpge r12, r2 "); // and check Length()-aPos>=aLength
+ asm("addge r1, r0, r1, lsl #1 "); // if so, r1=Ptr()+aPos*2
+ asm("orrge r0, r2, #0x10000000 "); // and r0 = aLength + EPtrC
+ __JUMP(ge,lr);
+ asm("b " CSM_Z23Des16PanicPosOutOfRangev);
+ }
+#endif // defined(__DES16_MACHINE_CODED__) && !defined(__EABI__)
+
+
+#ifdef __DES16_MACHINE_CODED__
+
+// Here are the __EABI__ compliant versions of the above
+#ifdef __EABI__
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Left(TInt /*aLength*/) const
+//
+// Extract the left portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aLength
+ // Return TPtr16 ([r0]=length/type,[r0,#4]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("cmp r2, #0 "); // check aLength>=0
+ asm("blt Des16PanicPosOutOfRange__Fv "); // if not, panic
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, r12 "); // else limit aLength to Length()
+ asm("movgt r2, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1=this.Ptr()
+ asm("mov r3, r1"); // r3=this.Ptr()
+ asm("orr r1, r2, #0x10000000 "); // r1=aLength + EPtrC
+ asm("stmia r0, {r1,r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Right(TInt /*aLength*/) const
+//
+// Extract the right portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aLength
+ // Return TPtr16 ([r0]=length/type,[r0,#4]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("cmp r2, #0 "); // check aLength>=0
+ asm("blt Des16PanicPosOutOfRange__Fv "); // if not, panic
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, r12 "); // else limit aLength to Length()
+ asm("movgt r2, r12 ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1=this.Ptr()
+ asm("add r3, r1, r12, lsl #1 "); // r3=this.Ptr()+len*2
+ asm("orr r1, r2, #0x10000000 "); // r1=aLength + EPtrC
+ asm("sub r3, r3, r2, lsl #1 "); // r2=Ptr()+len*2-aLength*2
+ asm("stmia r0, {r1,r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Mid(TInt /*aPos*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aPos
+ // Return TPtr16 ([r0]=length/type,[r0,#4]=Ptr)
+ asm("ldr r3, [r1], #4 "); // r3=this.length/type
+ asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
+ asm("cmp r2, #0 "); // check aPos>=0
+ asm("cmpge r12, r2 "); // if so check Length()>=aPos
+ asm("blt Des16PanicPosOutOfRange__Fv ");
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r3=this.Ptr()
+ asm("add r3, r1, r2, lsl #1 "); // r3=this.Ptr()+aPos*2
+ asm("sub r2, r12, r2 "); // r2=len-aPos (=newMaxLen)
+ asm("orr r1, r2, #0x10000000 "); // r1=len-aPos + EPtrC (=newLen/Type)
+ asm("stmia r0, {r1,r3} ");
+ __JUMP(,lr);
+ }
+
+__NAKED__ EXPORT_C TPtrC16 TDesC16::Mid(TInt /*aPos*/,TInt /*aLength*/) const
+//
+// Extract the middle portion of the descriptor.
+//
+ {
+ // On entry r0=return store ptr, r1=this, r2=aPos, r3=aLength
+ // Return TPtr16 ([r0]=length/type,[r0,#4]=Ptr)
+ asm("ldr r12, [r1], #4 "); // r12=this.length/type
+ asm("cmp r12, #0x50000000 "); // check valid descriptor type
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r12, r12, r12, lsr #1 ");
+ asm("msr cpsr_flg, r12 ");
+ asm("ldr r12, [r1, #-4] ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("bic r12, r12, #0xF0000000 "); // r12=Length()
+ asm("addeq r1, r1, #4 "); // r1=this.Ptr()
+ asm("cmp r2, #0 "); // check aPos>=0
+ asm("subge r12, r12, r2 "); // if so, r12=Length()-aPos
+ asm("cmpge r12, r3 "); // and check Length()-aPos>=aLength
+ asm("addge r2, r1, r2, lsl #1 "); // if so r2=this.Ptr()+aPos*2
+ asm("orrge r1, r3, #0x10000000 "); // and r1 = aLength + EPtrC
+ asm("stmgeia r0, {r1,r2} ");
+ __JUMP(ge,lr);
+ asm("b Des16PanicPosOutOfRange__Fv ");
+ }
+#endif // __EABI__
+
+
+__NAKED__ EXPORT_C void TDes16::Zero()
+//
+// Zero the buffer.
+//
+ {
+ asm("ldr r1, [r0] "); // r1=length/type
+ asm("and r1, r1, #0xF0000000 "); // r1=type field, zero length
+ asm("cmp r1, #0x40000000 "); // check for EBufCPtr
+ asm("str r1, [r0] "); // store zero length
+ __JUMP(ne,lr);
+ asm("ldr r2, [r0, #8] "); // r2 = pointer to TBufCBase
+ asm("mov r1, #0 ");
+ asm("str r1, [r2] "); // update length of TBufCBase
+ __JUMP(,lr);
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+#ifndef __KERNEL_MODE__
+__NAKED__ EXPORT_C void TDes16::ZeroTerminate()
+//
+// Zero terminate at Length().
+//
+ {
+ // Fall though to PtrZ below...
+ }
+
+__NAKED__ EXPORT_C const TUint16* TDes16::PtrZ()
+//
+// Return a pointer to a 0 terminated string.
+//
+ {
+ asm("ldmia r0, {r1,r2} "); // r1=length/type, r2=maxlength
+ asm("bic r3, r1, #0xF0000000 "); // r3=Length();
+ asm("cmp r3, r2 "); // check Length()<MaxLength()
+ asm("bge Des16PanicDesOverflow__Fv ");
+ asm("cmp r1, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("eor r1, r1, r1, lsr #1 ");
+ asm("msr cpsr_flg, r1 ");
+ asm("add r0, r0, #4 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=Ptr()
+ asm("add r1, r0, r3, lsl #1 "); // r1=Ptr()+Length()
+ asm("mov r2, #0 ");
+ asm("strh r2, [r1] "); // Ptr()[Length()]=0;
+ __JUMP(,lr);
+ }
+#endif // __KERNEL_MODE__
+
+__NAKED__ EXPORT_C void TDes16::Append(TChar /*aChar*/)
+//
+// Add a character at the end of the string.
+//
+ {
+ asm("ldmia r0, {r2,r3} "); // r2=length/type, r3=maxlength
+ asm("bic r12, r2, #0xF0000000 "); // r12=Length();
+ asm("cmp r12, r3 "); // check Length()<MaxLength()
+ asm("bge Des16PanicDesOverflow__Fv ");
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("add r2, r2, #1 "); // increment length by 1
+ asm("str r2, [r0] "); // store new length
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("add r2, r0, #4 "); // r2=this+4
+ asm("addcs r2, r2, #4 ");
+ asm("ldrle r2, [r2] ");
+ asm("addeq r3, r12, #1 "); // if EBufCPtr, r3=Length()+1
+ asm("streq r3, [r2], #4 "); // and update length of TBufCBase, r2=Ptr()
+ asm("add r2, r2, r12, lsl #1 "); // r2=Ptr()+Length()
+ asm("strh r1, [r2] "); // Ptr()[Length()]=aChar;
+ __JUMP(,lr);
+ }
+#endif
+
+__NAKED__ EXPORT_C void TDes16::Append(const TDesC16& /*aDes*/)
+//
+// Append a descriptor to this descriptor.
+//
+ {
+ asm("ldr r3, [r1], #4 "); // r3=aDes.length/type
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("bics r2, r3, #0xF0000000 "); // r2=aDes.Length()
+ __JUMP(eq,lr);
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("addcs r1, r1, #4 ");
+ asm("ldrle r1, [r1] ");
+ asm("addeq r1, r1, #4 "); // r1=aDes.Ptr()
+ asm("b appendbody "); // use following routine for rest of job
+ }
+
+__NAKED__ EXPORT_C void TDes16::Append(const TUint16* /*aBuf*/,TInt /*aLength*/)
+//
+// Append aLength from aBuf characters to the descriptor.
+//
+ {
+ asm("cmp r2, #0 "); // check aLength>=0
+ __JUMP(eq,lr);
+ asm("blt " CSM_Z24Des16PanicLengthNegativev);
+ asm("appendbody: ");
+ asm("ldmia r0, {r3,r12} "); // r3=type/length, r12=maxlength
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("bic r3, r3, #0xF0000000 "); // r3=Length()
+ asm("sub r12, r12, r3 "); // r12=MaxLength-Length
+ asm("cmp r2, r12 "); // check aLength<=(MaxLength-Length)
+ asm("bgt " CSM_Z21Des16PanicDesOverflowv);
+ asm("ldr r12, [r0] ");
+ asm("add r12, r12, r2 "); // new length/type field
+ asm("str r12, [r0], #4 "); // store it
+ asm("eor r12, r12, r12, lsr #1 ");
+ asm("msr cpsr_flg, r12 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("ldreq r12, [r0] "); // fetch length from TBufCBase
+ asm("addeq r12, r12, r2 "); // add aLength
+ asm("streq r12, [r0], #4 "); // update length of TBufCBase, r0=Ptr()
+ asm("add r0, r0, r3, lsl #1 "); // r0=Ptr()+Length()*2
+ asm("add r2, r2, r2 "); // r2=aLength*2
+ asm("b memmove "); // call memmove
+ }
+
+__NAKED__ EXPORT_C void TDes16::FillZ()
+//
+// Fill the descriptor with 0.
+//
+ {
+ asm("ldr r2, [r0] "); // r2=length/type
+ asm("cmp r2, #0x50000000 ");
+ asm("bcs " CSM_Z20Des16PanicBadDesTypev);
+ asm("bic r1, r2, #0xF0000000 "); // r1=Length()
+ asm("eor r2, r2, r2, lsr #1 ");
+ asm("msr cpsr_flg, r2 ");
+ asm("add r0, r0, #4 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=Ptr()
+ asm("add r1, r1, r1 "); // r1=2*Length()
+ asm("b memclr "); // call memclr
+ }
+
+#ifdef __DES16_MACHINE_CODED_HWORD__
+__NAKED__ EXPORT_C void TDes16::Fill(TChar /*aChar*/)
+//
+// Fill the descriptor with aChar.
+//
+ {
+ // on entry r0=this, r1=fill char
+ asm("ldr r3, [r0] "); // r3=length/type
+ asm("cmp r3, #0x50000000 ");
+ asm("bcs Des16PanicBadDesType__Fv ");
+ asm("bics r2, r3, #0xF0000000 "); // r2=Length()
+ __JUMP(eq,lr); // if length is zero, finished
+ asm("stmfd sp!, {r0,lr} "); // save registers for function call
+ asm("eor r3, r3, r3, lsr #1 ");
+ asm("msr cpsr_flg, r3 ");
+ asm("add r0, r0, #4 ");
+ asm("addcs r0, r0, #4 ");
+ asm("ldrle r0, [r0] ");
+ asm("addeq r0, r0, #4 "); // r0=Ptr()
+ asm("tst r0, #2 "); // check alignment of Ptr()
+ asm("strneh r1, [r0], #2 "); // if not aligned, fill first location
+ asm("subne r2, r2, #1 "); // and decrement length
+ asm("mov r1, r1, lsl #16 ");
+ asm("orr r1, r1, r1, lsr #16 "); // r1=fill char repeated
+ asm("mov r3, r1 ");
+ asm("mov r12, r1 ");
+ asm("mov r14, r1 "); // r1=r3=r12=r14=fill char repeated
+ asm("b 2f "); // branch to check for 16-char blocks
+ asm("1: ");
+ asm("stmia r0!, {r1,r3,r12,r14} "); // fill a block of 16 bytes
+ asm("stmia r0!, {r1,r3,r12,r14} "); // fill a block of 16 bytes
+ asm("2: ");
+ asm("subs r2, r2, #16 "); // check for more blocks of 16
+ asm("bge 1b "); // loop if more
+ asm("add r2, r2, #16 "); // now r1=number of chars remaining, 0<=r1<16
+ asm("mov r2, r2, lsl #28 "); // move into bits 28-31
+ asm("msr cpsr_flg, r2 "); // and into NZCV flags
+ asm("stmmiia r0!, {r1,r3,r12,r14} "); // fill a block of 16 bytes if needed
+ asm("stmeqia r0!, {r1,r3} "); // fill a block of 8 bytes if needed
+ asm("stmcsia r0!, {r1} "); // fill a block of 4 bytes if needed
+ asm("strvsh r1, [r0], #2 "); // fill last char if needed
+ __POPRET("r0,");
+ }
+#endif
+
+#endif // __DES16_MACHINE_CODED__
+
+
+
+